Term
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Definition
Vibration or shaking of the land's surface.
Commonly cause by development of a new fault or slip of an old fault. |
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Definition
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Definition
| The vertical projection of the focus onto the land surface. |
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Term
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Definition
Body (Travel across interior)
Surface (Travel across surface, elastically distort the material they pass through) |
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Term
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Definition
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Term
| Direction of wave propagation |
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Definition
| The direction in which a wave travels. |
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Term
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Definition
Sound, acoustical, compression, or primary waves.
Faster than S waves
Produce contractions and expansions.
Can travel through solids, liquids and gases. |
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Term
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Definition
Sheer/secondary waves.
Slower than P waves and produce sharing motion.
Raleigh/Love waves.
Cannot travel through liquids/gases. |
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Term
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Definition
Die out with depth.
Have a form of a wind blown ocean wave. |
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Term
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Definition
| Horizontal snake-like motion |
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Term
| Seismic Recording Stations |
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Definition
| P waves are first to arrive. |
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Term
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Definition
| Device used to record arrival. |
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Term
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Definition
| Tracing of the vibrations they produce. |
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Term
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Definition
The difference in arrival time between P and S waves.
Used to locate the epicenter. |
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Term
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Definition
Richter/moment magnitudes.
Measure values lined between 1-9. |
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Term
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Definition
| Based on largest scaled magnitude. |
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Term
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Definition
Most commonly used.
Based on the sheer strength of material in which fault occured, the ammount of offset among the fault, how much of the area in the fault plain was involved |
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Term
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Definition
Measure of the effects of an earthquake in people and structures.
1-6 people
6-12 structures |
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